Engine Coolant

The cooling system in the vehicle for all engines and the intercooler is filled with DEX-COOL®. This coolant is designed to remain in the vehicle for 5 years or 240 000 km (150,000 mi), whichever occurs first.

The following explains the cooling system and how to check and add coolant when it is low. If there is a problem with engine overheating, see Engine Overheating.

See also:

Safety
Side-impact airbags for the front seats, antilock brakes and programmable daytime running lights are standard. Dual-stage front airbags operate with a passenger-sensing system. Ultrasonic Rear Par ...

Chassis refinements
Chassis tuning has focused on achieving a smooth, quiet, refined ride. The DTS features an all-new front cradle design, with the engine mounted to the cradle, and the cradle mounted to the body ra ...

Hitch Cover (without Dual Exhaust)
The vehicle may have a hitch cover. To remove the hitch cover: 1. Turn the fasteners on the lower tabs 90 degrees counterclockwise. 2. Lift the lower edge of the cover about 45 degrees. 3. Pull t ...